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the final tapo4raphy. Access across the ditch will 6e by means of small <br />• bridges constructed in accordance with the requirements of the ditch <br />company. Initially there will only be ^ne bridge, which is already in <br />use. When the area to the south of the ditch is to be mined another <br />bridge will be constructed across the ditch. <br />Eventually, the sand under a portion of the ditch will be removed. <br />In order to acccomplish this, the ditch will have to 6e placed into a <br />supported pipe while the material is removed. This pipe will 6e similar <br />to the one which currently crosses Academy Boulevard but which will be <br />removed in the near future. Although the pipe would provide some of the <br />same hazards attendant with the current pipe, that hazard will be much, <br />much less, simply because a major highway will not be passing beneath it. <br />This matter of constructing a pipe across the mining area is <br />understandably complex and expensive. Furthermore, this process is <br />• many, many years into the future and between now and then many things <br />could happen. On the one hand, the ditch might be totally abandoned as <br />other water transport systems become available making it unnecessary. <br />This does not appear likely at this time, but there is a lot of time <br />between now and then. Another alternative would 6e to realign the ditch <br />to the north side of the mining area in an arrangement similar to what <br />is being done on Castle Concrete Company's Sand Fit. The important <br />point is that whatever will happen is a long ways in the future and it <br />is difficult to predict what will happen. Therefore, going to the <br />considerable expense of planning two or three alternatives now is rather <br />pointless as costs will dramatically change as well as the technology <br />and the need for such an irrigation ditch. <br />• <br /> <br />F'AGE OF 11 - EXHIBIT D <br />